1AAL

STRUCTURAL EFFECTS INDUCED BY MUTAGENESIS AFFECTED BY CRYSTAL PACKING FACTORS: THE STRUCTURE OF A 30-51 DISULFIDE MUTANT OF BASIC PANCREATIC TRYPSIN INHIBITOR

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.35	47.57

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 56.28	α = 90
b = 89.58	β = 90
c = 48.36	γ = 90

Symmetry
Space Group	C 2 2 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION		1.6	8	1	15473			0.179

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]

RMS Deviations
Key	Refinement Restraint Deviation
p_orthonormal_tor	20.6
p_staggered_tor	19.8
p_scangle_it	4.9
p_planar_tor	3.4
p_scbond_it	3
p_mcangle_it	2.9
p_mcbond_it	2
p_multtor_nbd	0.263
p_xhyhbond_nbd	0.218
p_singtor_nbd	0.193
p_chiral_restr	0.154
p_planar_d	0.063
p_angle_d	0.056
p_bond_d	0.02
p_plane_restr	0.016
p_angle_deg
p_hb_or_metal_coord
p_xyhbond_nbd
p_transverse_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	945
Nucleic Acid Atoms
Solvent Atoms	126
Heterogen Atoms	5

Software

Software
Software Name	Purpose
PROLSQ	refinement